./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label58.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label58.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80e930446c3b5aed0357903e7f6687fdab832b55b1199711672275ec34cd4ed8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:03:09,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:03:09,331 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:03:09,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:03:09,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:03:09,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:03:09,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:03:09,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:03:09,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:03:09,388 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:03:09,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:03:09,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:03:09,389 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:03:09,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:03:09,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:03:09,391 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:03:09,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:03:09,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:03:09,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:03:09,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:03:09,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:03:09,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:03:09,395 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:03:09,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:03:09,396 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:03:09,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:03:09,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:03:09,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:03:09,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:03:09,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:03:09,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:03:09,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:03:09,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:03:09,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:03:09,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:03:09,401 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:03:09,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:03:09,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:03:09,402 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:03:09,402 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80e930446c3b5aed0357903e7f6687fdab832b55b1199711672275ec34cd4ed8 [2023-11-12 02:03:09,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:03:09,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:03:09,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:03:09,733 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:03:09,734 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:03:09,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/eca-rers2012/Problem17_label58.c [2023-11-12 02:03:12,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:03:13,197 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:03:13,198 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/sv-benchmarks/c/eca-rers2012/Problem17_label58.c [2023-11-12 02:03:13,228 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/data/3b366a379/8b4b43f6db4541fda557175bc4958f39/FLAG56f635e41 [2023-11-12 02:03:13,243 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/data/3b366a379/8b4b43f6db4541fda557175bc4958f39 [2023-11-12 02:03:13,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:03:13,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:03:13,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:03:13,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:03:13,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:03:13,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:03:13" (1/1) ... [2023-11-12 02:03:13,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2fd21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:13, skipping insertion in model container [2023-11-12 02:03:13,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:03:13" (1/1) ... [2023-11-12 02:03:13,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:03:13,662 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/sv-benchmarks/c/eca-rers2012/Problem17_label58.c[6741,6754] [2023-11-12 02:03:14,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:03:14,525 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:03:14,562 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/sv-benchmarks/c/eca-rers2012/Problem17_label58.c[6741,6754] [2023-11-12 02:03:14,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:03:14,984 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:03:14,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14 WrapperNode [2023-11-12 02:03:14,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:03:14,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:03:14,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:03:14,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:03:14,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,347 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2023-11-12 02:03:15,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:03:15,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:03:15,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:03:15,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:03:15,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:03:15,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:03:15,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:03:15,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:03:15,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (1/1) ... [2023-11-12 02:03:15,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:03:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:15,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:03:15,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:03:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:03:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:03:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:03:15,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:03:15,950 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:03:15,952 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:03:20,293 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:03:20,312 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:03:20,313 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:03:20,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:03:20 BoogieIcfgContainer [2023-11-12 02:03:20,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:03:20,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:03:20,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:03:20,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:03:20,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:03:13" (1/3) ... [2023-11-12 02:03:20,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42daa470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:03:20, skipping insertion in model container [2023-11-12 02:03:20,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:03:14" (2/3) ... [2023-11-12 02:03:20,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42daa470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:03:20, skipping insertion in model container [2023-11-12 02:03:20,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:03:20" (3/3) ... [2023-11-12 02:03:20,327 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58.c [2023-11-12 02:03:20,346 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:03:20,347 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:03:20,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:03:20,423 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7aac7019, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>] [2023-11-12 02:03:20,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:03:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-12 02:03:20,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:20,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:20,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:20,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2068820151, now seen corresponding path program 1 times [2023-11-12 02:03:20,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:20,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597789030] [2023-11-12 02:03:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:20,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:03:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597789030] [2023-11-12 02:03:20,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597789030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:20,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:03:20,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889474023] [2023-11-12 02:03:20,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:20,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:20,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:20,950 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:24,973 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2023-11-12 02:03:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:24,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-12 02:03:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:24,997 INFO L225 Difference]: With dead ends: 1667 [2023-11-12 02:03:24,998 INFO L226 Difference]: Without dead ends: 998 [2023-11-12 02:03:25,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:25,008 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 500 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:25,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-12 02:03:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2023-11-12 02:03:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2023-11-12 02:03:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2023-11-12 02:03:25,115 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 45 [2023-11-12 02:03:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:25,116 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2023-11-12 02:03:25,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2023-11-12 02:03:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-12 02:03:25,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:25,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:25,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:03:25,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:25,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:25,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1676282541, now seen corresponding path program 1 times [2023-11-12 02:03:25,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:25,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488931992] [2023-11-12 02:03:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:25,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:03:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488931992] [2023-11-12 02:03:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488931992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:03:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734663766] [2023-11-12 02:03:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:25,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:25,498 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:28,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:28,611 INFO L93 Difference]: Finished difference Result 2843 states and 4882 transitions. [2023-11-12 02:03:28,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:28,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-11-12 02:03:28,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:28,624 INFO L225 Difference]: With dead ends: 2843 [2023-11-12 02:03:28,625 INFO L226 Difference]: Without dead ends: 1863 [2023-11-12 02:03:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:28,629 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:28,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 495 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 02:03:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2023-11-12 02:03:28,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1857. [2023-11-12 02:03:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4552801724137931) internal successors, (2701), 1856 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:28,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2701 transitions. [2023-11-12 02:03:28,771 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2701 transitions. Word has length 110 [2023-11-12 02:03:28,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:28,773 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 2701 transitions. [2023-11-12 02:03:28,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2701 transitions. [2023-11-12 02:03:28,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-12 02:03:28,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:28,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:03:28,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:28,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash -690077156, now seen corresponding path program 1 times [2023-11-12 02:03:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:28,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872328750] [2023-11-12 02:03:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:28,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:03:28,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:28,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872328750] [2023-11-12 02:03:28,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872328750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:28,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:28,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:03:28,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420677298] [2023-11-12 02:03:28,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:28,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:28,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:28,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:28,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:28,990 INFO L87 Difference]: Start difference. First operand 1857 states and 2701 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:31,872 INFO L93 Difference]: Finished difference Result 5425 states and 7895 transitions. [2023-11-12 02:03:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:31,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-12 02:03:31,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:31,894 INFO L225 Difference]: With dead ends: 5425 [2023-11-12 02:03:31,894 INFO L226 Difference]: Without dead ends: 3570 [2023-11-12 02:03:31,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:31,909 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 387 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:31,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-12 02:03:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2023-11-12 02:03:31,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 2714. [2023-11-12 02:03:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 1.315886472539624) internal successors, (3570), 2713 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3570 transitions. [2023-11-12 02:03:32,001 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3570 transitions. Word has length 116 [2023-11-12 02:03:32,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:32,006 INFO L495 AbstractCegarLoop]: Abstraction has 2714 states and 3570 transitions. [2023-11-12 02:03:32,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3570 transitions. [2023-11-12 02:03:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-12 02:03:32,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:32,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:32,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:03:32,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:32,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:32,024 INFO L85 PathProgramCache]: Analyzing trace with hash 544079772, now seen corresponding path program 1 times [2023-11-12 02:03:32,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:32,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746090906] [2023-11-12 02:03:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:32,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:03:32,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746090906] [2023-11-12 02:03:32,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746090906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:32,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:32,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:03:32,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924914505] [2023-11-12 02:03:32,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:03:32,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:03:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:03:32,848 INFO L87 Difference]: Start difference. First operand 2714 states and 3570 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:36,326 INFO L93 Difference]: Finished difference Result 7149 states and 9643 transitions. [2023-11-12 02:03:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:03:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-11-12 02:03:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:36,355 INFO L225 Difference]: With dead ends: 7149 [2023-11-12 02:03:36,355 INFO L226 Difference]: Without dead ends: 4437 [2023-11-12 02:03:36,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:03:36,372 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1162 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:36,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 841 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-12 02:03:36,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4437 states. [2023-11-12 02:03:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4437 to 4424. [2023-11-12 02:03:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 1.2912050644359032) internal successors, (5711), 4423 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 5711 transitions. [2023-11-12 02:03:36,487 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 5711 transitions. Word has length 193 [2023-11-12 02:03:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:36,489 INFO L495 AbstractCegarLoop]: Abstraction has 4424 states and 5711 transitions. [2023-11-12 02:03:36,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 5711 transitions. [2023-11-12 02:03:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-12 02:03:36,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:36,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:36,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:03:36,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:36,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1198749749, now seen corresponding path program 1 times [2023-11-12 02:03:36,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:36,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268317235] [2023-11-12 02:03:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:36,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-12 02:03:36,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:36,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268317235] [2023-11-12 02:03:36,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268317235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:36,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:36,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:03:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228981647] [2023-11-12 02:03:36,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:36,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:36,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:36,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:36,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:36,851 INFO L87 Difference]: Start difference. First operand 4424 states and 5711 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:40,271 INFO L93 Difference]: Finished difference Result 10593 states and 13804 transitions. [2023-11-12 02:03:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:40,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-11-12 02:03:40,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:40,306 INFO L225 Difference]: With dead ends: 10593 [2023-11-12 02:03:40,306 INFO L226 Difference]: Without dead ends: 6171 [2023-11-12 02:03:40,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:40,312 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 508 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:40,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 240 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-12 02:03:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2023-11-12 02:03:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6153. [2023-11-12 02:03:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 6152 states have (on average 1.303966189856957) internal successors, (8022), 6152 states have internal predecessors, (8022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 8022 transitions. [2023-11-12 02:03:40,457 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 8022 transitions. Word has length 199 [2023-11-12 02:03:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:40,458 INFO L495 AbstractCegarLoop]: Abstraction has 6153 states and 8022 transitions. [2023-11-12 02:03:40,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 8022 transitions. [2023-11-12 02:03:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-11-12 02:03:40,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:40,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:40,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:03:40,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:40,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash -654017339, now seen corresponding path program 1 times [2023-11-12 02:03:40,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:40,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511655334] [2023-11-12 02:03:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:40,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:03:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511655334] [2023-11-12 02:03:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511655334] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:03:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212287452] [2023-11-12 02:03:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:41,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:03:41,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:03:41,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:03:41,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:03:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:41,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:03:41,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:03:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:03:41,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:03:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:03:42,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212287452] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:03:42,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:03:42,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-11-12 02:03:42,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338222698] [2023-11-12 02:03:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:42,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:03:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:03:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:03:42,143 INFO L87 Difference]: Start difference. First operand 6153 states and 8022 transitions. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:46,938 INFO L93 Difference]: Finished difference Result 19997 states and 26780 transitions. [2023-11-12 02:03:46,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:03:46,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2023-11-12 02:03:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:47,003 INFO L225 Difference]: With dead ends: 19997 [2023-11-12 02:03:47,003 INFO L226 Difference]: Without dead ends: 12537 [2023-11-12 02:03:47,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:03:47,014 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 847 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:47,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 168 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-12 02:03:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12537 states. [2023-11-12 02:03:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12537 to 12531. [2023-11-12 02:03:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12531 states, 12530 states have (on average 1.2289704708699123) internal successors, (15399), 12530 states have internal predecessors, (15399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 15399 transitions. [2023-11-12 02:03:47,319 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 15399 transitions. Word has length 265 [2023-11-12 02:03:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:47,320 INFO L495 AbstractCegarLoop]: Abstraction has 12531 states and 15399 transitions. [2023-11-12 02:03:47,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 15399 transitions. [2023-11-12 02:03:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-11-12 02:03:47,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:47,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:47,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:03:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb044e0b-377e-4616-b07d-14d4d1bdf3df/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:03:47,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:47,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:47,536 INFO L85 PathProgramCache]: Analyzing trace with hash -925800976, now seen corresponding path program 1 times [2023-11-12 02:03:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:47,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560985121] [2023-11-12 02:03:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:03:47,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560985121] [2023-11-12 02:03:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560985121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:47,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:03:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569276801] [2023-11-12 02:03:47,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:47,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:47,927 INFO L87 Difference]: Start difference. First operand 12531 states and 15399 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:50,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:50,780 INFO L93 Difference]: Finished difference Result 30195 states and 36859 transitions. [2023-11-12 02:03:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2023-11-12 02:03:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:50,821 INFO L225 Difference]: With dead ends: 30195 [2023-11-12 02:03:50,822 INFO L226 Difference]: Without dead ends: 16816 [2023-11-12 02:03:50,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:50,840 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 413 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:50,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 859 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 02:03:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16816 states. [2023-11-12 02:03:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16816 to 16805. [2023-11-12 02:03:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16805 states, 16804 states have (on average 1.1906688883599144) internal successors, (20008), 16804 states have internal predecessors, (20008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16805 states to 16805 states and 20008 transitions. [2023-11-12 02:03:51,126 INFO L78 Accepts]: Start accepts. Automaton has 16805 states and 20008 transitions. Word has length 302 [2023-11-12 02:03:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:51,127 INFO L495 AbstractCegarLoop]: Abstraction has 16805 states and 20008 transitions. [2023-11-12 02:03:51,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 16805 states and 20008 transitions. [2023-11-12 02:03:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-12 02:03:51,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:51,138 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:51,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:03:51,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:51,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1794999384, now seen corresponding path program 1 times [2023-11-12 02:03:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:51,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889000511] [2023-11-12 02:03:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:03:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889000511] [2023-11-12 02:03:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889000511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:51,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:51,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:03:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955336140] [2023-11-12 02:03:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:51,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:51,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:51,770 INFO L87 Difference]: Start difference. First operand 16805 states and 20008 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:54,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:54,332 INFO L93 Difference]: Finished difference Result 40835 states and 48524 transitions. [2023-11-12 02:03:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:54,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2023-11-12 02:03:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:54,376 INFO L225 Difference]: With dead ends: 40835 [2023-11-12 02:03:54,376 INFO L226 Difference]: Without dead ends: 21900 [2023-11-12 02:03:54,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:54,397 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 374 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:54,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 810 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 02:03:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21900 states. [2023-11-12 02:03:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21900 to 21894. [2023-11-12 02:03:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21894 states, 21893 states have (on average 1.1318229571095784) internal successors, (24779), 21893 states have internal predecessors, (24779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21894 states to 21894 states and 24779 transitions. [2023-11-12 02:03:54,723 INFO L78 Accepts]: Start accepts. Automaton has 21894 states and 24779 transitions. Word has length 348 [2023-11-12 02:03:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:54,724 INFO L495 AbstractCegarLoop]: Abstraction has 21894 states and 24779 transitions. [2023-11-12 02:03:54,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 21894 states and 24779 transitions. [2023-11-12 02:03:54,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-11-12 02:03:54,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:54,799 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:54,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:03:54,800 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:54,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1446279023, now seen corresponding path program 1 times [2023-11-12 02:03:54,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:54,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725723706] [2023-11-12 02:03:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:03:55,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:55,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725723706] [2023-11-12 02:03:55,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725723706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:55,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:55,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:03:55,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896366286] [2023-11-12 02:03:55,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:55,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:55,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:55,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:55,294 INFO L87 Difference]: Start difference. First operand 21894 states and 24779 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:03:57,462 INFO L93 Difference]: Finished difference Result 48460 states and 55073 transitions. [2023-11-12 02:03:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:03:57,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2023-11-12 02:03:57,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:03:57,524 INFO L225 Difference]: With dead ends: 48460 [2023-11-12 02:03:57,525 INFO L226 Difference]: Without dead ends: 26568 [2023-11-12 02:03:57,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:57,543 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 369 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:03:57,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 790 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-12 02:03:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26568 states. [2023-11-12 02:03:58,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26568 to 26568. [2023-11-12 02:03:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26568 states, 26567 states have (on average 1.1179658975420634) internal successors, (29701), 26567 states have internal predecessors, (29701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26568 states to 26568 states and 29701 transitions. [2023-11-12 02:03:58,152 INFO L78 Accepts]: Start accepts. Automaton has 26568 states and 29701 transitions. Word has length 373 [2023-11-12 02:03:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:03:58,153 INFO L495 AbstractCegarLoop]: Abstraction has 26568 states and 29701 transitions. [2023-11-12 02:03:58,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:03:58,153 INFO L276 IsEmpty]: Start isEmpty. Operand 26568 states and 29701 transitions. [2023-11-12 02:03:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2023-11-12 02:03:58,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:03:58,167 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:03:58,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:03:58,167 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:03:58,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:03:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1440550631, now seen corresponding path program 1 times [2023-11-12 02:03:58,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:03:58,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584589568] [2023-11-12 02:03:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:03:58,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:03:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:03:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-12 02:03:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:03:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584589568] [2023-11-12 02:03:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584589568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:03:58,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:03:58,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:03:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047833993] [2023-11-12 02:03:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:03:58,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:03:58,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:03:58,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:03:58,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:03:58,763 INFO L87 Difference]: Start difference. First operand 26568 states and 29701 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)